Network Deployment Troubleshooting

The following is a list of known Web Appliance network
deployment issues and their solutions.

"Blocked" Notification Page Lacks Graphics and a Stylesheet

Problem: If the "Blocked" notification page is displayed without any graphics and as
raw HTML without the formatting of a stylesheet, the problem can result from the following
combination of conditions in your network deployment:

Your browser is configured to bypass use of the Web Appliance for your internal sites (for example, the
domain name of your Web Appliance would normally be
bypassed).

Your browser is configured with the Web Appliance’s IP address instead of its fully qualified hostname.

Your DNS server cannot resolve the Web Appliance’s
IP address.

Solution: The best solution is to add the Web Appliance to your DNS server.

Background: The Web Appliance provides a managed
appliance experience that is enabled in part by sending system status snapshots as email
attachments to Sophos to ensure that your Web Appliance is operating within acceptable thresholds.

Solution: To enable the Sophos managed
appliance experience, configure your firewall to allow email with attachments from the Web Appliance to wsasupport@sophos.com.

Long delays when loading web pages

Problem: If latency is significantly increased when browsing through the appliance,
the problem may be due to an inappropriate Speed and duplex setting
forced by enabling the auto-detect option.

Solution: To test if this is the case, set one of the manual options in the
Speed and duplex option on the Configuration > Network > Network Interface page. If this change does not remedy the high latency problem, reinstate the
automatic option and contact Sophos Technical Support .

RealPlayer Content Appears to be Blocked

Problem: RealPlayer content fails to play. This is typically a firewall
configuration issue and not an Web Appliance problem.
RealPlayer uses port 554, which is typically blocked in default firewall configurations.

Note

The remote site can force the use of a non-HTTP port, which will result in
users not being able to view the content if the firewall is blocking the port being
used.

Solution: To enable access to RealPlayer content, open port 554 on your
firewall.